mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Camshaft Position Sensor > < Barometric Pressure Sensor|Locations|Page 1753
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Brake On/Off (BOO) Switch: Description and Operation

Typical Brake Pedal Position Switch

PURPOSE

The Brake On-Off (BOO) switch detects braking action (deceleration). In response to the BOO signal, the ECA modifies idle speed, air/fuel ratio,
torque converter clutch operation on A/T applications, and A/C compressor (if equipped).

OPERATION

Switch contacts are closed when the brakes are APPLIED.

Camshaft Position Sensor > < Barometric Pressure Sensor|Locations|Page 1753